Half to dickson



(No Model.)

PUMP.

Patented Jan. 19

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UNITED STATES PATENT OFFICE.

WILLIAM J. VRIGHT, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO DICKSON, KERR du CO., OF SAME PLACE.

PUMP.'

SPECIFICATION forming part of Letters Patent No. 575,498, dated January 19, 1897.

v Application tiled August 12, 1896. Serial No. 602,573 NO model.)

'To all whom, it may concern: cient to snugly fit the bore of the tubing, such Be it known that I, WILLIAM J. WRIGHT, foot portion h2 resting upon the annular inresiding at Pittsburg, in the county of Alleternal iiange a, which forms a support for the gheny and State of Pennsylvania, have instanding barrel, as clearly shown in Fig. 2. 55 5 vented a new and Improved Pump, of which The lower or foot portion of the standing barthe following is a specification. rel has a series of huid-passages b3 and a cen- My invention is in the nature of an imtral fluid-passage b4, in connectionwith which proved oil-well pump; and it seeks to provide operates an inwardlybpeningball or lift valve a pump of this character of a simple and eco- E, held within a suitable valve-pocket of any 6o ro nomical construction which can be easily well-known or novel construction.

manipulated and which will effectively serve So far as described it will be manifestly for its intended purposes. clear that by forming the standing barrel in My invention also seeks to provide a pump the manner described an annular fluid-space of this character having the standing and F is always maintained between the foot por- 65 i 5 working barrel so arranged that in operation tion b2 and the upper portion o of the standa continuous agitation of the fluid is maining barrel, in which the fluid is drawn through tained, so as to wash the rock and thereby the passages h3 as the working barrel D is render a more uniform and constant flow in lifted and from which the Iiuid is ejected the well. through the said passages b3 as the said valve 7o 2o With otherob jects in view, which will here- E is forced down. The upper chamber b is inafter appear, my invention consists in the provided with an outlet b5, provided with a peculiar and novel combination and arrangeball or lift valve E', held in a suitable cage f, ment of parts, such as will be first described as shown. in detail, and then be specifically pointed out The working barrel D consists ofa cylinder 7 5 25 in the appended claims, reference being had held to snugly it the bore of the tubing A, to the accompanying drawings, in whichthe lower end of which is apertnred, as at e, Figure 1 is a side elevation of my improved for the passage of the pendent member h of pump, part of the outer barrel being broken the standingbarrel B, which aperture e is, away. Fig. 2 is a vertical longitudinal sechowever, of a somewhat larger diameter than 8o 3o tion of the same, the working barrel being at the said member b to admit of a free entrance the lowermost position. Fig. 3 is a similar or exit of the uid held within the space F, view, the working barrel being in an upper the lower end c/ of the working barrel operposit-ion. Fig. 4 is a cross-section taken on ating as a piston for agitating and forcing the the line e et of Fig. 2, and Figs. 5 and 6 are liquid in such space F through the passages 85 3 5 similar views taken on the lines 5 5 and G G b3 out against the rock to wash same at all of Fig. 2. times during the pumping operation.

Referring to the accompanying drawings, The upper end of the working barrel has an A indicates the outer barrel or tubing, the outlet e2, provided with a ball or lift valve G, lowermost section of which has an annular inalso held in a suitable cage, such upper end 9o 4o ternal fiange d at the bottom for a purpose also having a bridge-piece e3, to which is conpresently described. nected a threaded shank H, which receives B indicates the standing barrel or cylinder, the lift-rod J, as shown. which in my construction comprises an upper From the foregoing description, taken in portion h of a somewhat les's diameter than connection with the accompanyingdrawings, 95 45 the tube A, whereby to provide an annular the advantages and complete operation of my space O between the said tube A and the porimproved oil-well pump, it is thought, will tion B of the standing barrel (see Fig. 2) for be clearly understood by those skilled in the 'the passage of the working or slide barrel D, art to which it appertains.

such portion b terminating in al pendent tu- It will be seen that by my construction of loo 5o bular member b', the lower end of which terpump a constant movement of the fluid on minates in a foot portion b2 of a diameter sufiithe rock will at all times be maintained, as

the iuid which is drawn in between the working and the standing barrels would be forced out again on the downward thrust of the working barrel D, while the flow of fluid drawn in through the lower end of the standing barrel by the up movement of the working barrel would be forced up through the working barrel on the down movement through the valved outlet at the top and through the valved outlet in the top of the working barrel. It will be seen, as there isa greater weight of fluid on the movable or working barrel D than on .the standing barrel, owing to the working barrel having a greater diameter than the standing barrel, such working barrel will be forced down by such excess weight of water to its lowermostposition.

Another and important advantage of my invention is that, while the lift-rods may be connected thereto in the usual manner, such rods may be dispensed with and the pumpbarrels raised by a rope, as the same can be forced down by Huid pressure, as before stated.

\Vliile an ordinary ball and removable cage or seat is shown,it is obvious that in wells where there is much sand drawn up with the fluid the barrels are lnade slightly smaller and are provided with leather or other suitable cups.

In adjusting the several parts of my pump the inner and outer barrels are lowered into the tubing A until the standing barrel valve rests on the part a of the tubing.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination in a pump of an outer tube open at the bottom and a standing barrel held therein having valved openings at the top and bottom, said barrel having a portion reduced whereby an annular fluid-space is provided between it and the outer tube,

the lower end of such Vbarrel having openings communicating with such space and a working barrel movable between the standing barrel and the outer tube, said working barrel having a valved outlet in the top, and a horizontal portion projected into the annular fluid-space at the bottom, all substantially as shown and described.

2, In an oil-pump mechanism, the combination with the outer tubing, ot' a standing barrel, having a valved inlet and outlet opening, and an apertured foot portion of a diameter Iitting the outer barrel or tubing, and having a portion of a reduced diameter, whereby an annular fluid-holding chamber is formed, said foot portions having openings b3, and a movable barrel, surrounding the inner barrel, extended above the said inner barrel provided with a valved outlet at the upper end and a horizontal internal flange at the lower end, said outer valve havinga limited free movement on the inner valve and provided with a plunger member operating in the annular fluid-chamber as set forth.

3. The combination with the outerbarrel or tubing, and the inner barrel, having valved inlets and outlets, said inner barrel valve having a lower or pendent portion of reduced diameter, terminating in an annular apertured foot portion of a diameter to fit the bore of the outer tubing, and the movable barrel held to slide between the inner barrel and the outer tubing, its upper end being extended above the inner barrel and provided with a valved outlet and a lift-rod, its lower end being apertured for the passage of the reduced end of the inner barrel said lower end having a iuidpassage all arranged substantially as and for the purposes described.

lVM. J. VRIGHT. lVitnesses:

W. M. DALGLIESH, J No. J AY BURKE. 

